Very interesting! All my life I've wondered why sometimes we say "violet" and sometimes "purple", with a vague sense that they are not exactly synonyms. Here i

Very interesting! All my life I've wondered why sometimes we say "violet" and sometimes "purple", with a vague sense that they are not exactly synonyms. Here is a related question that got a very knowledgeable and helpful answer: https://news.ycombinator.com/item?id=17507968 https://news.ycombinator.com/item?id=17507968 (Why is there a color "wheel" when frequencies are linear?) HN is amazing!